Hood are a postrock band from Leeds, England. They are Andrew Johnson, Chris Adams, Richard Adams, John Evans, Craig Tattersall and Nicola Hodgkinson. They make minor-key experimental music that is very good for rainy days and lonely times, if you're the kind of person that music doesn't cheer up anyways.
Their sound is very unique. It's based on the common acoustic guitar and vocals, but with many added elements such as electronic autechre style beats, wind bells, many delay effects, sad pianos, etc. Hood are making something new.
Fro similar artists, I'd check out the American Analog Set, Flying Saucer Attack, Tortoise, Laika, Pram...